Vulnerability CVE-2024-27410
Published: 2024-05-17

Description:
In the Linux kernel, the following vulnerability has been resolved:

wifi: nl80211: reject iftype change with mesh ID change

It's currently possible to change the mesh ID when the
interface isn't yet in mesh mode, at the same time as
changing it into mesh mode. This leads to an overwrite
of data in the wdev->u union for the interface type it
currently has, causing cfg80211_change_iface() to do
wrong things when switching.

We could probably allow setting an interface to mesh
while setting the mesh ID at the same time by doing a
different order of operations here, but realistically
there's no userspace that's going to do this, so just
disallow changes in iftype when setting mesh ID.

 References:
https://git.kernel.org/stable/c/d38d31bbbb9dc0d4d71a45431eafba03d0bc150d
https://git.kernel.org/stable/c/0cfbb26ee5e7b3d6483a73883f9f6157bca22ec9
https://git.kernel.org/stable/c/99eb2159680af8786104dac80528acd5acd45980
https://git.kernel.org/stable/c/063715c33b4c37587aeca2c83cf08ead0c542995
https://git.kernel.org/stable/c/930e826962d9f01dcd2220176134427358d112f2
https://git.kernel.org/stable/c/177d574be4b58f832354ab1ef5a297aa0c9aa2df
https://git.kernel.org/stable/c/a2add961a5ed25cfd6a74f9ffb9e7ab6d6ded838
https://git.kernel.org/stable/c/f78c1375339a291cba492a70eaf12ec501d28a8e
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